What are the requirements for sprinkler coverage for baffled ceilings?
In Florida we use the 2016 edition of NFPA 13. I know that the sprinklers have to be within 12 inches of ceiling for heat collection. The contractor says the pictures shown are correct.
I think they need to place a 12 by 12 above the baffle for heat collection?
I found 220.127.116.11 Minimum Distances Between Sprinklers.
If sprinklers are installed above and below the ceiling, a baffle needs to be installed around the lower sprinkler to avoid cold soldering. Cold soldering occurs when discharged water from the sprinkler above cools the thermal element of the sprinkler below, preventing or delaying its activation in the event of the fire. The required baffle will prevent that water from contacting the thermal element of the sprinkler, thus circumventing the possible issue.
Talked to some folks and we need the product paperwork as it may mention sprinkler coverage.
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